吉黑东部花岗岩类中副矿物锆石、磷灰石、榍石的初步研究

吉黑东部花岗岩中副矿物种类繁多,特别是锆石、磷灰石、榍石广泛分布.它们在不同成因类型花岗岩中有些标型特征彼此有别,如锆石的颜色、晶形和群型特征,磷灰石的两种晶形REE分布模式及SrI值和榍石的不同世代、成因等,这些均有助于查明不同成因花岗岩的形成条件.因此,可以利用锆石、磷灰石、榍石的标型特征作为判别和划分花岗岩成因的辅助标志.

PRELIMINARY STUDY ON THE ACCESSORY MINERALS IN GRANITOIDS IN EASTERN JILIN AND HEILONGJIANG PROVINCES

The accessory minerals in granitoids in the east of Jilin and Heilongjiang Provinces are various in types. Among them zircon, apatite and sphene are broadly distributed. Their characters distinguish themselves in different types of granites. The color, crystal forms and group types of zircons, the REE distribution models and Sri values of apatites, as well as the generations and origins of sphenes are helpful to identify the forming conditions of granites with different origins. Thus the typomorphic characteristics can be subsidiary signs to distinguish and classify the genesis of granites.